prettygirlsummer prettygirlsummer

12-10-2021
Mathematics

contestada

show work please I need help with both questions 3 and 5 thanks

show work please I need help with both questions 3 and 5 thanks class=

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winifredagbofa29 winifredagbofa29

12-10-2021

Answer:

B) {8.71}

Step-by-step explanation:

3. l.c.m=28

28×3/7=28×b-7/4

4×3=7(b-7)

12=7b-49

12+49=7b

61=7b

61/7=7b/7

8.71=b

b=8.71.

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